CN114584267A

CN114584267A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN114584267A
Application number: CN202011389301.XA
Authority: CN
Inventors: 刘瑾; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2022-06-03
Also published as: WO2022116986A1; US20230269708A1

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A first node receives a first signaling; performing a first channel sensing within a first resource pool; determining a target resource pool; selecting a target time-frequency resource block from a target resource pool; sending a second signaling on the target time frequency resource block; the first signaling indicates a first set of reference resources comprising at least one time-frequency resource block; the first channel awareness is used to determine the target resource pool; the first alternative time frequency resource block is one time frequency resource block in the target resource pool; whether the first alternative time frequency resource block belongs to the first reference resource set is used to determine whether the first alternative time frequency resource block is selected as the target time frequency resource block; the second signaling is used to indicate the target time-frequency resource block. The method and the device effectively utilize the resources coordinated among the users and ensure the freedom degree of resource selection.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission scheme and apparatus related to a Sidelink (Sidelink) in wireless communication.

Background

Starting from LTE (Long Term Evolution), 3GPP (3rd Generation Partner Project) has developed SL (Sidelink) as a direct communication method between users, and completed the first NR SL (New Radio Sidelink) standard of "5G V2X with NR Sidelink" in Rel-16(Release-16, version 16). In Rel-16, NR SL is designed primarily for V2X (Vehicle-To-Everyzing), but it may also be used for Public Safety (Public Safety).

However, due to time constraints, the NR SL Rel-16 cannot fully support the service requirements and operational scenarios identified by 3GPP for 5G V2X. The 3GPP will therefore investigate the enhanced NR SL in Rel-17.

Disclosure of Invention

In the Rel-16 system, due to the distributed NR SL system, Users (UEs) select resources autonomously, and the problem of half duplex (i.e., users cannot transmit and receive simultaneously) or Hidden node (Hidden UE) easily causes two transmitting users to occupy the same SL resource to transmit signals to the same receiving User, thereby causing persistent interference and resource collision between users. Introduction of Inter-user coordination (Inter-UE coordination) is a feasible approach to solve resource collision among users. However, the need for effectively utilizing inter-user coordination and securing the freedom of resource selection remains to be studied.

In view of the above problems, the present application discloses a resource selection method introducing the coordination between SL users, thereby effectively utilizing the resource coordinated between the users and solving the problems of half-duplex and hidden nodes. It should be noted that, without conflict, the embodiments and features in the embodiments in the user equipment of the present application may be applied to the base station, and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. Further, although the present application was originally intended for SL, the present application can also be used for UL (Uplink). Further, although the present application was originally directed to single carrier communication, the present application can also be applied to multicarrier communication. Further, although the present application was originally directed to single antenna communication, the present application can also be applied to multi-antenna communication. Further, although the original intention of the present application is directed to the V2X scenario, the present application is also applicable to the communication scenarios between the terminal and the base station, between the terminal and the relay, and between the relay and the base station, and achieves the technical effects in the similar V2X scenario. Furthermore, adopting a unified solution for different scenarios (including but not limited to V2X scenario and terminal to base station communication scenario) also helps to reduce hardware complexity and cost.

It should be noted that the term (telematics) in the present application is explained with reference to the definitions in the 3GPP specification protocol TS36 series, TS37 series and TS38 series, but can also be defined with reference to the IEEE (Institute of Electrical and Electronics Engineers) specification protocol.

The application discloses a method in a first node used for wireless communication, characterized by comprising:

receiving a first signaling; performing a first channel sensing within a first resource pool; determining a target resource pool;

selecting a target time-frequency resource block from a target resource pool; sending a second signaling on the target time frequency resource block;

wherein the first signaling indicates a first set of reference resources comprising at least one time-frequency resource block; the first channel awareness is used to determine the target resource pool; the first alternative time frequency resource block is one time frequency resource block in the target resource pool; whether the first alternative time frequency resource block belongs to the first reference resource set is used to determine whether the first alternative time frequency resource block is selected as the target time frequency resource block; the second signaling is used to indicate the target time-frequency resource block.

As an embodiment, the problem to be solved by the present application is: the resource coordination among users causes the problem that the freedom degree of the user resource selection is limited.

As an example, the method of the present application is: an association is established between the resource coordinated among the users and the resource selection.

As an example, the method of the present application is: and establishing association between the resource coordinated among the users and the target time frequency resource block.

As an embodiment, the above method is characterized in that when the perceived channel resource belongs to an inter-user coordination resource, the channel resource is more easily selected as a transmission resource.

As an embodiment, the method has the advantages that on the premise of effectively utilizing the coordination resources among the users, the freedom degree of the autonomous resource selection of the users is guaranteed, and the hidden node problem of the distributed system is effectively solved.

According to an aspect of the application, the above method is characterized in that the first alternative time-frequency resource block is associated to a first time-frequency resource block; the first resource pool comprises the first time-frequency resource block; the measurement value for the first time frequency resource block and whether the first candidate time frequency resource block belongs to the first reference resource set are used together to determine whether the first candidate time frequency resource block is selected as the target time frequency resource block.

According to one aspect of the application, the method described above is characterized by comprising:

receiving a third signaling;

wherein the third signaling indicates a second resource pool comprising a third time-frequency resource block to which a third alternative time-frequency resource block is associated; the second resource pool is used to determine the first resource pool, the first resource pool not including the third time-frequency resource block; the first signaling is used to determine whether the third alternative time-frequency resource block belongs to the target resource pool.

According to an aspect of the application, the above method is characterized in that said first resource pool comprises said fourth time-frequency resource block, to which a fourth alternative time-frequency resource block is associated; the measurement value for the fourth time-frequency resource block is above a first threshold; the first signaling and first offset value are used together to determine whether the fourth alternative time-frequency resource block belongs to the target resource pool.

According to an aspect of the application, the above method is characterized in that the first node is a user equipment.

According to an aspect of the application, the above method is characterized in that the first node is a relay node.

According to an aspect of the application, the above method is characterized in that the first node is a base station.

The application discloses a method in a second node used for wireless communication, characterized by comprising:

sending a first signaling;

receiving a second signaling on a target time frequency resource block;

wherein the first signaling is used to indicate a first set of reference resources comprising at least one time-frequency resource block; whether the first set of reference resources includes a first candidate time frequency resource block is used by a recipient of the first signaling to determine whether the first candidate time frequency resource block is selected as the target time frequency resource block; the second signaling indicates the target time-frequency resource block.

According to an aspect of the application, the above method is characterized in that the second node is a user equipment.

According to an aspect of the application, the above method is characterized in that the second node is a relay node.

According to an aspect of the application, the above method is characterized in that the second node is a base station.

The application discloses a method in a third node used for wireless communication, characterized by comprising:

sending a third signaling;

wherein the third signaling is used to indicate a second resource pool that is used by a recipient of the third signaling to determine a first resource pool; the second resource pool comprises a third time frequency resource block, and the first resource pool does not comprise the third time frequency resource block.

According to one aspect of the application, the above method is characterized in that the third node is a base station.

According to an aspect of the application, the above method is characterized in that the third node is a relay node.

According to an aspect of the application, the above method is characterized in that the third node is a user equipment.

The application discloses a first node used for wireless communication, characterized by comprising:

a first receiver receiving a first signaling; performing a first channel sensing within a first resource pool; determining a target resource pool;

the first transmitter selects a target time-frequency resource block from a target resource pool; sending a second signaling on the target time frequency resource block;

wherein the first signaling indicates a first set of reference resources comprising at least one time-frequency resource block; the first channel sensing is used to determine the target resource pool; the first alternative time frequency resource block is one time frequency resource block in the target resource pool; whether the first alternative time frequency resource block belongs to the first reference resource set is used to determine whether the first alternative time frequency resource block is selected as the target time frequency resource block; the second signaling is used to indicate the target time-frequency resource block.

The application discloses a second node used for wireless communication, characterized by comprising:

a second transmitter for transmitting the first signaling;

the second receiver receives a second signaling on the target time frequency resource block;

The present application discloses a third node used for wireless communication, comprising:

a third transmitter for transmitting a third signaling;

As an example, the present application has the following advantages:

the problem to be solved by the present application is: the problem that the freedom degree of user resource selection is limited due to resource coordination among users;

-the application establishes an association between resources coordinated among users and resource selection;

the method of the present application establishes an association between inter-user coordinated resources and target time-frequency resource blocks;

in the present application, when the perceived channel resources belong to inter-user coordination resources, said channel resources are more easily selected as transmission resources;

the method and the device ensure the freedom degree of the independent resource selection of the users and effectively solve the hidden node problem of the distributed system on the premise of effectively utilizing the coordinated resources among the users.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:

FIG. 1 illustrates a process flow diagram of a first node according to one embodiment of the present application;

FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

figure 3 shows a schematic diagram of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;

FIG. 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

FIG. 5 shows a wireless signal transmission flow diagram according to an embodiment of the present application;

fig. 6 shows a schematic diagram of a first resource pool, a given time domain resource block, a given reference signal and a given alternative time frequency resource block and a target resource pool according to an embodiment of the present application;

fig. 7 illustrates a flow diagram for determining whether a first alternative time-frequency resource block is selected as a target time-frequency resource block according to an embodiment of the present application;

fig. 8 shows a schematic diagram of a relationship between a first resource pool, a second resource pool, a third time domain resource block and a third alternative time frequency resource block and a target resource pool according to an embodiment of the application;

fig. 9 shows a flowchart for determining whether a fourth alternative time-frequency resource block belongs to a target resource pool according to an embodiment of the application;

fig. 10 shows a block diagram of a processing arrangement for use in a first node according to an embodiment of the application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a processing flow diagram of a first node according to an embodiment of the present application, as shown in fig. 1. In fig. 1, each block represents a step.

In embodiment 1, a first node in the present application first executes step 101, and receives a first signaling; step 102 is executed to execute a first channel sensing in a first resource pool; step 103 is executed again, and a target resource pool is determined; then step 104 is executed, and a target time frequency resource block is selected from the target resource pool; finally, step 105 is executed, and a second signaling is sent on the target time frequency resource block; the first signaling indicates a first set of reference resources comprising at least one time-frequency resource block; the first channel awareness is used to determine the target resource pool; the first alternative time frequency resource block is one time frequency resource block in the target resource pool; whether the first alternative time frequency resource block belongs to the first reference resource set is used to determine whether the first alternative time frequency resource block is selected as the target time frequency resource block; the second signaling is used to indicate the target time-frequency resource block.

For one embodiment, the first reference Resource set includes multiple REs (Resource Elements).

As an embodiment, any RE of the plurality of REs comprised by the first set of reference resources occupies one multi-carrier Symbol (Symbol) in the time domain and one sub-carrier (Subcarrier) in the frequency domain.

As an embodiment, the first reference resource set includes a positive integer number of time domain resource blocks in the time domain, and the first reference resource set includes a positive integer number of frequency domain resource blocks in the frequency domain.

As an embodiment, any time domain resource block of the positive integer number of time domain resource blocks comprised by the first set of reference resources in the time domain occupies a positive integer number of multi-carrier symbols (symbol (s)).

As an embodiment, any time domain resource block of the positive integer number of time domain resource blocks comprised by the first set of reference resources in the time domain occupies a positive integer number of slots (slot (s)).

As one embodiment, any one of the positive integer number of frequency domain resource blocks comprised in the frequency domain by the first set of reference resources occupies a positive integer number of subcarriers (subcarrier (s)).

As an embodiment, any one of the positive integer number of frequency domain Resource blocks comprised by the first reference Resource set in the frequency domain occupies a positive integer number of Physical Resource blocks (prb(s), Physical Resource Block (s)).

As an embodiment, any one of the positive integer number of frequency domain resource blocks comprised by the first set of reference resources in the frequency domain occupies a positive integer number of subchannels (subchannels).

For one embodiment, the first set of reference resources includes a positive integer number of time-frequency resource blocks.

For one embodiment, the first set of reference resources comprises at least one time-frequency resource block.

For an embodiment, the first set of reference resources comprises one time-frequency resource block.

For one embodiment, the first set of reference resources includes a plurality of time-frequency resource blocks.

As an embodiment, any one of the positive integer number of time-frequency resource blocks included in the first reference resource set occupies a positive integer number of slots in a time domain, and occupies a positive integer number of subchannels in a frequency domain.

As an embodiment, any one of the positive integer number of time-frequency resource blocks included in the first reference resource set occupies a positive integer number of multicarrier symbols in a time domain, and occupies a positive integer number of subchannels in a frequency domain.

As an embodiment, any one of the positive integer number of time-frequency resource blocks included in the first reference resource set occupies a positive integer number of time slots in a time domain, and occupies a positive integer number of physical resource blocks in a frequency domain.

As an embodiment, any one of the positive integer number of time-frequency resource blocks included in the first reference resource set occupies a positive integer number of multicarrier symbols in a time domain, and occupies a positive integer number of physical resource blocks in a frequency domain.

In one embodiment, any one of the positive integer number of time-frequency resource blocks included in the first reference resource set includes a positive integer number of res(s).

As an embodiment, the first set of reference resources includes a PSCCH (Physical Sidelink Control Channel).

As an embodiment, the first set of reference resources includes a psch (Physical Sidelink Shared Channel).

As an embodiment, the first reference resource set includes a PSFCH (Physical Sidelink Feedback Channel).

As an embodiment, the first set of Reference resources is used for transmitting a SL RS (Sidelink Reference Signal).

As one embodiment, the SL RS includes a SL CSI-RS (Sidelink Channel State Information Reference Signal).

For one embodiment, the SL RS includes PSCCH DMRS (Demodulation Reference Signal).

For one embodiment, the SL RS includes PSSCH DMRS.

As an embodiment, the first set of reference resources is obtained by a sender of the first signaling through channel sensing.

As an embodiment, the first reference resource set is a time-frequency resource recommended by a sender of the first signaling to the first node for transmission.

As an embodiment, the first set of reference resources is time-frequency resources indicated by a sender of the first signaling for sending the second signaling.

For one embodiment, the first signaling includes one or more fields in a PHY Layer (Physical Layer) signaling.

As an embodiment, the first signaling includes one or more fields in a SCI (Sidelink Control Information).

As an embodiment, the first signaling comprises a SCI.

For one embodiment, the first signaling includes at least one of a plurality of fields of a first level SCI format and at least one of a plurality of fields of a second level SCI format.

As an embodiment, the first Signaling includes all or part of a Higher Layer Signaling (high Layer Signaling).

As an embodiment, the first signaling includes all or part of a Radio Resource Control (RRC) layer signaling.

For one embodiment, the first signaling comprises all or part of a PC5-RRC signaling.

As an embodiment, the first signaling includes all or part of a MAC (Multimedia Access Control) layer signaling.

As an embodiment, the channel occupied by the first signaling comprises a PSCCH.

As an embodiment, the channel occupied by the first signaling includes a psch.

As an embodiment, the first signaling indicates a time domain resource occupied by the first reference resource set.

As an embodiment, the first signaling indicates frequency domain resources occupied by the first reference resource set.

As an embodiment, the first signaling indicates time-frequency resources occupied by the first reference resource set.

As an embodiment, the first signaling indicates the positive integer number of time domain resource blocks comprised by the first reference resource set.

As one embodiment, the first signaling indicates the positive integer number of frequency domain resource blocks comprised by the first reference resource set.

As an embodiment, the first signaling indicates the positive integer number of time-frequency resource blocks included in the first reference resource set.

As an embodiment, the first resource pool is used for Sidelink (SL) transmission.

As an embodiment, the first Resource Pool includes all or part of resources of a secondary link Resource Pool (SL Resource Pool).

For one embodiment, the first Resource Pool includes all or part of a secondary link Transmission Resource Pool (SL Transmission Resource Pool).

As an embodiment, the first Resource Pool includes all or part of resources of a secondary link Reception Resource Pool (SL Reception Resource Pool).

For one embodiment, the first pool of resources comprises PSCCHs.

For one embodiment, the first resource pool includes a PSSCH.

For one embodiment, the first resource pool includes a PSFCH.

For one embodiment, the first resource pool is used for transmitting SL RSs.

For one embodiment, the first resource pool includes a plurality of REs.

As an embodiment, any RE of the REs included in the first resource pool occupies one multicarrier symbol in a time domain and occupies one subcarrier in a frequency domain.

As an embodiment, the first resource pool comprises a plurality of time domain resource blocks in the time domain and the first resource pool comprises a plurality of frequency domain resource blocks in the frequency domain.

As an embodiment, any time domain resource block of the plurality of time domain resource blocks comprised by the first resource pool in the time domain comprises a positive integer number of multicarrier symbols.

As an embodiment, any time domain resource block of the plurality of time domain resource blocks comprised by the first resource pool in the time domain comprises a positive integer number of slots.

As an embodiment, any one of the plurality of frequency domain resource blocks comprised by the first resource pool in the frequency domain comprises a positive integer number of subcarriers.

As an embodiment, any frequency domain resource block of the plurality of frequency domain resource blocks comprised by the first resource pool in the frequency domain comprises a positive integer number of physical resource blocks.

As an embodiment, any one of the plurality of frequency domain resource blocks comprised by the first resource pool in the frequency domain comprises a positive integer number of subchannels.

For one embodiment, the first resource pool includes a plurality of time-frequency resource blocks.

As an embodiment, any time-frequency resource block in the multiple time-frequency resource blocks included in the first resource pool occupies a positive integer of time slots in a time domain, and occupies a positive integer of consecutive sub-channels in a frequency domain.

As an embodiment, any time-frequency resource block in the plurality of time-frequency resource blocks included in the first resource pool occupies a positive integer number of multicarrier symbols in a time domain and occupies a positive integer number of consecutive subchannels in a frequency domain.

As an embodiment, any time-frequency resource block in the plurality of time-frequency resource blocks included in the first resource pool occupies a positive integer of time slots in a time domain, and occupies a positive integer of consecutive physical resource blocks in a frequency domain.

As an embodiment, any time-frequency resource block in the plurality of time-frequency resource blocks included in the first resource pool occupies a positive integer number of multicarrier symbols in a time domain, and occupies a positive integer number of consecutive physical resource blocks in a frequency domain.

In an embodiment, any one of the plurality of time-frequency resource blocks included in the first resource pool includes a positive integer number of res(s).

As an embodiment, the plurality of time domain resource blocks comprised by the first resource pool in the time domain are Pre-configured (Pre-configured).

As an embodiment, the plurality of time domain resource blocks comprised by the first resource pool in the time domain are Configured for higher layer signaling (Configured).

For one embodiment, the target resource pool is used for sidelink transmissions.

For one embodiment, the target resource pool includes all or a portion of resources of a sidelink resource pool.

For one embodiment, the target resource pool includes all or a portion of resources of a sidelink transmission resource pool.

For one embodiment, the target resource pool includes all or part of the resources of the secondary link reception resource pool.

For one embodiment, the target resource pool comprises a PSCCH.

For one embodiment, the target resource pool includes a PSSCH.

For one embodiment, the target resource pool includes a PSFCH.

For one embodiment, the target resource pool is used for transmitting SL RSs.

For one embodiment, the target resource pool includes a plurality of REs.

As an embodiment, the target resource pool includes a plurality of time domain resource blocks in a time domain, and the target resource pool includes a plurality of frequency domain resource blocks in a frequency domain.

As an embodiment, any time domain resource block of the plurality of time domain resource blocks comprised by the target resource pool in the time domain comprises a positive integer number of multicarrier symbols.

As an embodiment, any time domain resource block of the plurality of time domain resource blocks comprised by the target resource pool in the time domain comprises a positive integer number of slots.

As an embodiment, any one of the plurality of frequency domain resource blocks comprised by the target resource pool in the frequency domain comprises a positive integer number of subcarriers.

As an embodiment, any frequency domain resource block of the plurality of frequency domain resource blocks comprised by the target resource pool in the frequency domain comprises a positive integer number of physical resource blocks.

As an embodiment, any one of the plurality of frequency domain resource blocks comprised by the target resource pool in the frequency domain comprises a positive integer number of subchannels.

For one embodiment, the target resource pool includes a plurality of time-frequency resource blocks.

As an embodiment, any time-frequency resource block in the plurality of time-frequency resource blocks included in the target resource pool occupies a positive integer of time slots in a time domain, and occupies a positive integer of consecutive sub-channels in a frequency domain.

As an embodiment, any time-frequency resource block in the plurality of time-frequency resource blocks included in the target resource pool occupies a positive integer number of multicarrier symbols in a time domain and occupies a positive integer number of subchannels in a frequency domain.

As an embodiment, any time-frequency resource block in the plurality of time-frequency resource blocks included in the target resource pool occupies a positive integer of time slots in a time domain, and occupies a positive integer of consecutive physical resource blocks in a frequency domain.

As an embodiment, any time-frequency resource block in the multiple time-frequency resource blocks included in the target resource pool occupies a positive integer of multicarrier symbols in a time domain, and occupies a positive integer of consecutive physical resource blocks in a frequency domain.

In one embodiment, any one of the plurality of time-frequency resource blocks included in the target resource pool includes a positive integer number of res(s).

As an embodiment, the target resource pool includes a plurality of time-frequency resource blocks, and the first candidate time-frequency resource block is one of the plurality of time-frequency resource blocks included in the target resource pool.

As an embodiment, any one of the plurality of time-frequency resource blocks comprised by the target resource pool is associated to one time-frequency resource block in the first resource pool.

As an embodiment, one of the plurality of time-frequency resource blocks comprised by the target resource pool is not associated to one of the time-frequency resource blocks in the first resource pool.

As an embodiment, one time-frequency resource block of the plurality of time-frequency resource blocks comprised by the target resource pool is associated to one time-frequency resource block of a second resource pool in the present application.

As an embodiment, one of the plurality of time-frequency resource blocks comprised by the target resource pool is associated to one of the time-frequency resource blocks in the second resource pool in the present application, and the first resource pool does not comprise the one of the time-frequency resource blocks in the second resource pool in the present application.

As an embodiment, the target resource pool and the first resource pool are TDM (Time Division Multiplexing).

For one embodiment, the target resource pool is orthogonal to the first resource pool in the time domain.

For one embodiment, the first resource pool and the target resource pool do not overlap in a time domain.

As an embodiment, any one of the plurality of time domain resource blocks included in the first resource pool is different from any one of the plurality of time domain resource blocks included in the target resource pool.

As an embodiment, the time domain resources occupied by the target resource pool and the time domain resources occupied by the first resource pool are orthogonal.

As an embodiment, any time-frequency resource block in the target resource pool and any time-frequency resource block in the first resource pool are TDM.

For one embodiment, the target resource pool is later in time than the first resource pool.

As an embodiment, the time domain resource occupied by any time frequency resource block in the first resource pool is earlier than the time domain resource occupied by any time frequency resource block in the target resource pool.

As an embodiment, any time domain resource block in the first resource pool is earlier than any time domain resource block in the target resource pool.

For one embodiment, the target resource pool overlaps the first resource pool in a frequency domain.

As an embodiment, at least one of the plurality of frequency domain resource blocks comprised by the target resource pool is the same as one of the plurality of frequency domain resource blocks comprised by the first resource pool.

As an embodiment, at least one of the plurality of frequency domain resource blocks comprised by the target resource pool is different from one of the plurality of frequency domain resource blocks comprised by the first resource pool.

As an embodiment, the target resource pool comprises the first alternative time-frequency resource block.

As an embodiment, the first alternative time-frequency resource block belongs to the target resource pool.

As an embodiment, the first alternative time frequency resource block is one time frequency resource block of the plurality of time frequency resource blocks comprised by the target resource pool.

As an embodiment, the first set of reference resources comprises the first alternative time-frequency resource block.

As an embodiment, the first alternative time-frequency resource block belongs to the first reference resource set.

As an embodiment, the first alternative time frequency resource block is one time frequency resource block of the positive integer number of time frequency resource blocks comprised by the first reference resource set.

As an embodiment, the first set of reference resources does not comprise the first alternative time-frequency resource block.

As an embodiment, the first alternative time-frequency resource block does not belong to the first reference resource set.

As an embodiment, the first alternative time frequency resource block is different from any one of the positive integer number of time frequency resource blocks included in the first reference resource set.

For an embodiment, the target resource pool includes the target time-frequency resource block.

As an embodiment, the target time frequency resource block is one time frequency resource block of the plurality of time frequency resource blocks included in the target resource pool.

As an embodiment, the target time-frequency resource block comprises a PSCCH.

As an embodiment, the target time-frequency resource block comprises a psch.

As an embodiment, the target time-frequency resource block comprises a PSFCH.

As an embodiment, the target time-frequency resource block is used for transmitting the second signaling.

As an embodiment, the first node autonomously selects the target time-frequency resource block from the target resource pool.

As an embodiment, the first node autonomously selects the first candidate time frequency resource block from the target resource pool as the target time frequency resource block.

As an embodiment, the target time-frequency resource block is selected autonomously by the first node from the target resource pool.

As an embodiment, the first node is indicated with the target time-frequency resource block, which belongs to the target resource pool.

As an embodiment, the first node is indicated that the first alternative time frequency resource block is the target time frequency resource block, the first alternative time frequency resource block belonging to the target resource pool.

As an embodiment, the time domain resource occupied by the first alternative time frequency resource block includes a time domain resource block which is the earliest time domain resource block in the plurality of time domain resource blocks included in the target resource pool, and the first alternative time frequency resource block is selected as the target time frequency resource block.

For one embodiment, the first set of reference resources comprises the target time-frequency resource block.

As an embodiment, the target time-frequency resource block belongs to the first reference resource set, and the target time-frequency resource block also belongs to the target resource pool.

As an embodiment, the target time frequency resource block is one of the positive integer number of time frequency resource blocks included in the first reference resource set, and the target time frequency resource block is one of the multiple time frequency resource blocks included in the target resource pool.

As an embodiment, when the first alternative time frequency resource block is one of the positive integer number of time frequency resource blocks included in the first reference resource set, the first alternative time frequency resource block is selected as the target time frequency resource block; when the first alternative time frequency resource block is different from any one of the positive integer time frequency resource blocks included in the first reference resource set, the first alternative time frequency resource block is not selected as the target time frequency resource block.

As an embodiment, the target resource pool includes a first candidate time frequency resource block and a second candidate time frequency resource block, the first candidate time frequency resource block belongs to the first reference resource set, the second candidate time frequency resource block does not belong to the first reference resource set, and the former of the first candidate time frequency resource block or the second candidate time frequency resource block is selected as the target time frequency resource block.

As an embodiment, the target resource pool includes a first candidate time frequency resource block and a second candidate time frequency resource block, the first candidate time frequency resource block belongs to the first reference resource set, the second candidate time frequency resource block also belongs to the first reference resource set, and the first candidate time frequency resource block is not selected as the target time frequency resource block.

As an embodiment, the target resource pool includes a first candidate time frequency resource block and a second candidate time frequency resource block, the first candidate time frequency resource block belongs to the first reference resource set, the second candidate time frequency resource block also belongs to the first reference resource set, and one of the first candidate time frequency resource block and the second candidate time frequency resource block is selected as the target time frequency resource block.

As an embodiment, the target resource pool includes a first candidate time frequency resource block and a second candidate time frequency resource block, where the first candidate time frequency resource block and the second candidate time frequency resource block both belong to the first reference resource set, the target time frequency resource block is selected from the first candidate time frequency resource block or the second candidate time frequency resource block, and the target time frequency resource block is the first candidate time frequency resource block.

As a sub-embodiment of the foregoing embodiment, the time domain resource occupied by the first alternative time frequency resource block is earlier than the time domain resource occupied by the second alternative time frequency resource block.

As a sub-embodiment of the foregoing embodiment, the first candidate time-frequency resource block is associated with a first time-frequency resource block, the second candidate time-frequency resource block is associated with a second time-frequency resource block, both the first time-frequency resource block and the second time-frequency resource block belong to the first resource pool, a first Reference Signal is transmitted on the first time-frequency resource block, a second Reference Signal is transmitted on the second time-frequency resource block, and a Reference Signal Received Power (RSRP) of the first Reference Signal measured on the first time-frequency resource block is lower than a Reference Signal Received Power (RSRP) of the second Reference Signal measured on the second time-frequency resource block.

As a sub-embodiment of the foregoing embodiment, the first candidate time-frequency resource block is associated with a first time-frequency resource block, the second candidate time-frequency resource block is associated with a second time-frequency resource block, both the first time-frequency resource block and the second time-frequency resource block belong to the first resource pool, a first reference Signal is transmitted on the first time-frequency resource block, a second reference Signal is transmitted on the second time-frequency resource block, and a Received Signal Strength Indicator (RSSI) of the first reference Signal measured on the first time-frequency resource block is lower than a Received Signal Strength Indicator (RSSI) of the second reference Signal measured on the second time-frequency resource block.

As an embodiment, the target resource pool includes a first candidate time-frequency resource block and a second candidate time-frequency resource block, and when the first candidate time-frequency resource block belongs to the first reference resource set and the second candidate time-frequency resource block does not belong to the first reference resource set, the first candidate time-frequency resource block is selected as the target time-frequency resource block; when the first alternative time frequency resource block does not belong to the first reference resource set and the second alternative time frequency resource block belongs to the first reference resource set, the first alternative time frequency resource block is not selected as the target time frequency resource block; when the first alternative time frequency resource block belongs to the first reference resource set and the second alternative time frequency resource block also belongs to the first reference resource set, one of the first alternative time frequency resource block or the second alternative time frequency resource block is selected as the target time frequency resource block; and when the first alternative time frequency resource block does not belong to the first reference resource set and the second alternative time frequency resource block does not belong to the first reference resource set, the first alternative time frequency resource block is not selected as the target time frequency resource block.

As an embodiment, the first alternative time frequency resource block and the second alternative time frequency resource block are two time frequency resource blocks of the multiple time frequency resource blocks included in the target resource pool.

As an embodiment, the selecting the first alternative time frequency resource block as the target time frequency resource block refers to: the target time frequency resource block is the first alternative time frequency resource block.

As an embodiment, the selecting the first alternative time frequency resource block as the target time frequency resource block refers to: the first node selects the first alternative time frequency resource block as the target time frequency resource block from one of the first alternative time frequency resource block or the second alternative time frequency resource block.

As an embodiment, the selecting the first alternative time frequency resource block as the target time frequency resource block refers to: the target time frequency resource block is the former of the first alternative time frequency resource block or the second alternative time frequency resource block.

As an embodiment, the selecting the first alternative time frequency resource block as the target time frequency resource block refers to: the target time frequency resource block is the first alternative time frequency resource block in the plurality of time frequency resource blocks included in the target resource pool.

For one embodiment, the second signaling includes one or more fields in a PHY layer signaling.

As an embodiment, the second signaling comprises one or more fields in one SCI.

As an embodiment, the second signaling comprises a SCI.

For one embodiment, the second signaling includes a first level SCI format of a first level SCI format and a second level SCI format.

For one embodiment, the second signaling includes one or more fields in a first level SCI format.

As an example, the definition of SCI refers to sections 8.3 and 8.4 of 3GPP TS 38.212.

As an example, the definition of the first level SCI format refers to section 8.3 of 3GPP TS 38.212.

For one embodiment, the definition of the second level SCI format refers to section 8.4 of 3GPP TS 38.212.

As an embodiment, the second signaling comprises all or part of a higher layer signaling.

For one embodiment, the second signaling includes one or more fields in a PC5-RRC signaling.

As an embodiment, the second signaling comprises all or part of a MAC layer signaling.

As an embodiment, the channel occupied by the second signaling comprises a PSCCH.

As an embodiment, the channel occupied by the second signaling includes a psch.

As an embodiment, the second signaling indicates the target time-frequency resource block.

As an embodiment, the second signaling indicates a time domain resource occupied by the target time frequency resource block.

As an embodiment, the second signaling indicates a frequency domain resource occupied by the target time-frequency resource block.

As an embodiment, the second signaling indicates an REs included in the target time-frequency resource block.

As an embodiment, the second signaling includes a plurality of domains, and the time domain resource occupied by the target time frequency resource block and the frequency domain resource occupied by the target time frequency resource block are two domains of the plurality of domains included in the second signaling.

As an embodiment, the second signaling indicates the second priority.

As an embodiment, the second signaling carries the second priority.

As an embodiment, the second signaling includes a plurality of domains, and the second priority is one of the plurality of domains included in the second signaling.

As an embodiment, the second signaling includes first sub-signaling and second sub-signaling, and the first sub-signaling includes the first priority.

As an embodiment, the second signaling includes a first sub signaling and a second sub signaling, the first sub signaling includes the second priority, and the second sub signaling carries an identifier (Identity) of the first node.

As an embodiment, the second signaling includes a first sub-signaling and a second sub-signaling, the first sub-signaling is in a first-level SCI format, the second sub-signaling is in a second-level SCI format, and the first sub-signaling includes the second priority.

As an embodiment, the multi-Carrier symbol in this application is an SC-FDMA (Single-Carrier Frequency Division Multiple Access) symbol.

As an embodiment, the multicarrier symbol in this application is a DFT-S-OFDM (Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing) symbol.

As an embodiment, the multicarrier symbol in this application is an FDMA (Frequency Division Multiple Access) symbol.

As an example, the multicarrier symbol in the present application is an FBMC (Filter Bank Multi-Carrier) symbol.

As an embodiment, the multicarrier symbol in this application is an IFDMA (Interleaved Frequency Division Multiple Access) symbol.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 illustrates a diagram of a network architecture 200 for 5G NR, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) systems. The 5G NR or LTE network architecture 200 may be referred to as a 5GS (5G System)/EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS/EPS 200 may include one or more UEs (User Equipment) 201, one UE241 in Sidelink (Sidelink) communication with the UE201, an NG-RAN (next generation radio access Network) 202, a 5GC (5G Core Network )/EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server )/UDM (Unified Data Management) 220, and an internet service 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/EPS provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (transmitting receiving node), or some other suitable terminology. In an NTN network, examples of the gNB203 include a satellite, an aircraft, or a ground base station relayed through a satellite. The gNB203 provides the UE201 with an access point to the 5GC/EPC 210. Examples of UEs 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptops, Personal Digital Assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband internet of things equipment, machine-type communication equipment, land vehicles, automobiles, wearable equipment, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. MME/AMF/SMF211 is a control node that handles signaling between UE201 and 5GC/EPC 210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet protocol) packets are transported through the S-GW/UPF212, which S-GW/UPF212 itself is connected to the P-GW/UPF 213. The P-GW provides UE IP address assignment as well as other functions. The P-GW/UPF213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet-switched streaming service.

As an embodiment, the first node in the present application includes the UE 201.

As an embodiment, the second node in this application includes the UE 241.

As an embodiment, the third node in this application includes the gNB 203.

As an embodiment, the UE201 is included in the user equipment of the present application.

As an embodiment, the UE241 is included in the user equipment in this application.

As an embodiment, the base station apparatus in this application includes the gNB 203.

As an embodiment, the receiver of the first signaling in this application includes the UE 201.

As an embodiment, the sender of the first signaling in this application includes the UE 241.

As an embodiment, the sender of the second signaling in this application includes the UE 201.

As an embodiment, the receiver of the second signaling in this application includes the UE 241.

As an embodiment, the receiver of the third signaling in this application includes the UE 201.

As an embodiment, the sender of the third signaling in this application includes the gNB 203.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the first node device (RSU in UE or V2X, car mounted device or car communications module) and the second node device (gNB, RSU in UE or V2X, car mounted device or car communications module), or the control plane 300 between two UEs, in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301, and is responsible for the link between the first and second node devices and the two UEs through PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node device. The PDCP sublayer 304 provides data ciphering and integrity protection, and the PDCP sublayer 304 also provides handover support for a first node device to a second node device. The RLC sublayer 303 provides segmentation and reassembly of packets, retransmission of missing packets by ARQ, and the RLC sublayer 303 also provides duplicate packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell between the first node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3(L3 layer) in the Control plane 300 is responsible for obtaining Radio resources (i.e., Radio bearers) and configuring the lower layers using RRC signaling between the second node device and the first node device. The radio protocol architecture of the user plane 350 includes layer 1(L1 layer) and layer 2(L2 layer), the radio protocol architecture in the user plane 350 for the first node device and the second node device is substantially the same for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support diversity of services. Although not shown, the first node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).

As an example, the wireless protocol architecture in fig. 3 is applicable to the first node in this application.

The radio protocol architecture of fig. 3 applies to the second node in this application as an example.

As an example, the radio protocol architecture in fig. 3 is applicable to the third node in the present application.

As an embodiment, the first signaling in this application is generated in the PHY 301.

As an embodiment, the first signaling in this application is generated in the RRC sublayer 306.

As an embodiment, the first signaling in this application is transmitted to the PHY301 via the MAC sublayer 302.

As an embodiment, the second signaling in this application is generated in the PHY 301.

As an embodiment, the second signaling in this application is generated in the RRC sublayer 306.

As an embodiment, the second signaling in this application is transmitted to the PHY301 via the MAC sublayer 302.

As an embodiment, the third signaling in this application is generated in the RRC sublayer 306.

Example 4

Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in fig. 4. Fig. 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

The first communications device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

The second communications device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

In the transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of layer L2. In transmissions from the first communications device 410 to the first communications device 450, the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 450 and mapping of signal constellation based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.

In a transmission from the first communications device 410 to the second communications device 450, at the second communications device 450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol streams from receiver 454. Receive processor 456 converts the baseband multicarrier symbol stream after the receive analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the second communication device 450. The symbols on each spatial stream are demodulated and recovered at a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communications device 410 on the physical channel. The upper layer data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the functionality of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In transmissions from the first communications device 410 to the second communications device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the core network. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In a transmission from the second communications device 450 to the first communications device 410, a data source 467 is used at the second communications device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function at the first communications apparatus 410 described in the transmission from the first communications apparatus 410 to the second communications apparatus 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to said first communications device 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding by a multi-antenna transmit processor 457 including codebook-based precoding and non-codebook based precoding, and beamforming, and the transmit processor 468 then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a transmitter 454 after analog precoding/beamforming in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides the radio frequency symbol stream to the antenna 452.

In a transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the receiving functionality at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functionality of the L1 layer. Controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmissions from the second communications device 450 to the first communications device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer data packets from the controller/processor 475 may be provided to a core network.

As an embodiment, the first node in this application includes the second communication device 450, and the second node in this application includes the first communication device 410.

As an embodiment, the first node in this application includes the second communication device 450, and the third node in this application includes the first communication device 410.

As an embodiment, the first node in this application includes the second communication device 450, the second node in this application includes the first communication device 410, and the third node in this application includes the first communication device 410.

As a sub-embodiment of the foregoing embodiment, the first node is a user equipment, and the second node is a user equipment.

As a sub-embodiment of the foregoing embodiment, the first node is a user equipment, the second node is a user equipment, and the third node is a relay node.

As a sub-embodiment of the foregoing embodiment, the first node is a user equipment, the second node is a relay node, and the third node is a base station equipment.

As a sub-embodiment of the above-described embodiment, the second communication device 450 includes: at least one controller/processor; the at least one controller/processor is responsible for HARQ operations.

As a sub-embodiment of the above-described embodiment, the first communication device 410 includes: at least one controller/processor; the at least one controller/processor is responsible for HARQ operations.

As a sub-embodiment of the above-mentioned embodiments, the first communication device 410 comprises: at least one controller/processor; the at least one controller/processor is responsible for error detection using positive Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) protocols to support HARQ operations.

As an embodiment, the second communication device 450 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 450 apparatus at least: receiving a first signaling; performing a first channel sensing within a first resource pool; determining a target resource pool; selecting a target time-frequency resource block from a target resource pool; sending a second signaling on the target time frequency resource block; the first signaling indicates a first set of reference resources comprising at least one time-frequency resource block; the first channel awareness is used to determine the target resource pool; the first alternative time frequency resource block is one time frequency resource block in the target resource pool; whether the first alternative time frequency resource block belongs to the first reference resource set is used to determine whether the first alternative time frequency resource block is selected as the target time frequency resource block; the second signaling is used to indicate the target time-frequency resource block.

As an embodiment, the second communication device 450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first signaling; performing a first channel sensing within a first resource pool; determining a target resource pool; selecting a target time-frequency resource block from a target resource pool; sending a second signaling on the target time frequency resource block; the first signaling indicates a first set of reference resources comprising at least one time-frequency resource block; the first channel awareness is used to determine the target resource pool; the first alternative time frequency resource block is one time frequency resource block in the target resource pool; whether the first alternative time frequency resource block belongs to the first reference resource set is used to determine whether the first alternative time frequency resource block is selected as the target time frequency resource block; the second signaling is used to indicate the target time-frequency resource block.

As an embodiment, the first communication device 410 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The first communication device 410 means at least: sending a first signaling; receiving a second signaling on a target time frequency resource block; the first signaling is used to indicate a first set of reference resources comprising at least one time-frequency resource block; whether the first set of reference resources includes a first candidate time frequency resource block is used by a recipient of the first signaling to determine whether the first candidate time frequency resource block is selected as the target time frequency resource block; the second signaling indicates the target time-frequency resource block.

As an embodiment, the first communication device 410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: sending a first signaling; receiving a second signaling on a target time frequency resource block; the first signaling is used to indicate a first set of reference resources comprising at least one time-frequency resource block; whether the first set of reference resources includes a first candidate time frequency resource block is used by a recipient of the first signaling to determine whether the first candidate time frequency resource block is selected as the target time frequency resource block; the second signaling indicates the target time-frequency resource block.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 may be utilized to receive third signaling as described herein.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 may be used to receive the first signaling in this application.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 is used to perform the first channel sensing within the first resource pool in the present application.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 is used to determine a target resource pool as described herein.

As an example, at least one of { the antenna 452, the transmitter 454, the multi-antenna transmit processor 458, the transmit processor 468, the controller/processor 459, the memory 460, the data source 467} is used in this application to select a target time-frequency resource block from a target resource pool.

As an example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 458, the transmit processor 468, the controller/processor 459, the memory 460, the data source 467 may be used for sending the second signaling on the target resource time-frequency resource block in this application.

As an example, at least one of { the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475, the memory 476} is used to send the first signaling in this application.

As an example, at least one of { the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475, the memory 476} is used for receiving second signaling on a target time-frequency resource block in this application.

As an example, at least one of { the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475, the memory 476} is used to send third signaling in this application.

Example 5

Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 5. In fig. 5, the first node U1, the second node U2 and the third node U3 communicate over an air interface, and the steps in block F0 and the steps in block F1 of fig. 5 are optional.

For theFirst node U1Receiving a third signaling in step S11; performing a first channel sensing within the first resource pool in step S12; receiving a first signaling in step S13; determining a target resource pool in step S14; selecting a target time-frequency resource block from the target resource pool in step S15; in step S16, the second signaling is sent on the target time-frequency resource block.

For theSecond node U2Transmitting a first signaling in step S21; in step S22, second signaling is received on the target time-frequency resource block.

For theThird node U3In step S31, the third signaling is sent.

In embodiment 5, the first signaling indicates a first set of reference resources comprising at least one time-frequency resource block; the first channel awareness is used to determine the target resource pool; the first alternative time frequency resource block is one time frequency resource block in the target resource pool; whether the first alternative time frequency resource block belongs to the first reference resource set is used to determine whether the first alternative time frequency resource block is selected as the target time frequency resource block; the second signaling is used to indicate the target time-frequency resource block; the first alternative time frequency resource block is associated to a first time frequency resource block; the first resource pool comprises the first time-frequency resource block; the third signaling indicates a second resource pool, which is used to determine the first resource pool.

As an embodiment, the measurement value for the first time-frequency resource block and whether the first alternative time-frequency resource block belongs to the first reference resource set are used together to determine whether the first alternative time-frequency resource block is selected as the target time-frequency resource block.

As an embodiment, the second resource pool comprises a third time frequency resource block, to which a third alternative time frequency resource block is associated; the first resource pool does not comprise the third time-frequency resource block; the first signaling is used to determine whether the third alternative time-frequency resource block belongs to the target resource pool.

As an embodiment, the first resource pool comprises the fourth time frequency resource block to which a fourth alternative time frequency resource block is associated; the measurement value for the fourth time-frequency resource block is above a first threshold; the first signaling and a first offset value are used together to determine whether the fourth alternative time-frequency resource block belongs to the target resource pool.

For one embodiment, the first node U1 and the second node U2 communicate with each other via a PC5 interface.

For one embodiment, the first node U1 and the third node U3 communicate with each other via a Uu interface.

As one example, the steps in block F0 in FIG. 5 are present and the steps in block F1 in FIG. 5 are not present.

As one example, the steps in block F0 in FIG. 5 are not present and the steps in block F1 in FIG. 5 are present.

As one example, both the steps in block F0 and the steps in block F1 in FIG. 5 exist.

As an example, the sender of the third signaling is the third node U3, the step in block F0 in fig. 5 existing.

As an example, the sender of the third signaling is a higher layer of the first node U1, and the step in block F0 in fig. 5 does not exist.

As an example, the step in block F0 in fig. 5 exists when the sender of the third signaling is the third node U3; when the sender of the third signaling is a higher layer of the first node U1, the step in block F0 in fig. 5 does not exist.

As an example, the sender of the first signaling is co-located with the intended recipient of the second signaling, the step in block F1 of fig. 5 exists.

As an example, the sender of the first signaling is non-co-located with the intended recipient of the second signaling, and the step in block F1 in fig. 5 does not exist.

As an example, the step in block F1 in fig. 5 exists when the sender of the first signaling is co-located with the intended recipient of the second signaling; the step in block F1 in fig. 5 does not exist when the sender of the first signaling is non-co-located with the intended recipient of the second signaling.

As an embodiment, the third signaling comprises all or part of a higher layer signaling.

As an embodiment, the third signaling comprises all or part of one RRC layer signaling.

As an embodiment, the third signaling includes one or more fields in an RRC IE (Radio Resource Control Information Element).

As an embodiment, the third signaling comprises all or part of a PC5-RRC signaling.

As an embodiment, the third signaling comprises all or part of a MAC layer signaling.

As an embodiment, the third signaling includes one or more fields in a MAC CE (Multimedia Access Control Element).

As an embodiment, the channel occupied by the third signaling comprises a PSCCH.

As an embodiment, the channel occupied by the third signaling includes a pscch.

As an embodiment, the third signaling indicates the second resource pool.

As an embodiment, the third signaling indicates a time domain resource occupied by the second resource pool.

As an embodiment, the third signaling indicates frequency domain resources occupied by the second resource pool.

As an embodiment, the third signaling includes a plurality of domains, and the time domain resource occupied by the second resource pool and the frequency domain resource occupied by the second resource pool are two domains of the plurality of domains included in the third signaling.

As an embodiment, the third signaling includes a SL IE (Sidelink Information Element).

As an embodiment, the third signaling comprises SL-ResourcePool.

As an example, the specific definition of SL-ResourcePool refers to section 6.3.5 of TS 8.331.

As one embodiment, a sender of the first signaling is co-located with a target recipient of the second signaling.

As an embodiment, the sender of the first signaling and the target recipient of the second signaling are the same communication node.

As an embodiment, both the sender of the first signaling and the target recipient of the second signaling are the second node U2.

As an embodiment, the sender of the first signaling and the target recipient of the second signaling are the same user equipment.

As an example, a Backhaul Link between the sender of the first signaling and the target receiver of the second signaling is ideal (i.e., the delay can be neglected).

As one embodiment, a sender of the first signaling shares a same set of BaseBand (BaseBand) devices with a target recipient of the second signaling.

As one embodiment, a sender of the first signaling is non-co-located with a target recipient of the second signaling.

As an embodiment, the sender of the first signaling and the target recipient of the second signaling are two different communication nodes, respectively.

As an embodiment, the sender of the first signaling is the second node U2 and the target recipient of the second signaling is a different communication node than the second node U2.

As an embodiment, the sender of the first signaling and the target recipient of the second signaling are two different user equipments, respectively.

As an example, a Backhaul Link between a sender of the first signaling and a target recipient of the second signaling is non-ideal (i.e., delay may not be negligible).

As one embodiment, the sender of the first signaling and the intended recipient of the second signaling do not share the same set of BaseBand (BaseBand) devices.

Example 6

Embodiment 6 illustrates a schematic diagram of a first resource pool, a given time-domain resource block, a given reference signal, a given alternative time-frequency resource block, and a target resource pool according to an embodiment of the present application, as shown in fig. 6. In FIG. 6, the dashed box represents the first resource pool in the present application; a rectangle in a dotted line square block represents a time-frequency resource block in the first resource pool; the diagonal filled rectangles represent given time-frequency resource blocks in the application; the square-filled rectangles represent given reference signals in the present application; the bold solid line boxes represent the target resource pool in the present application; the rectangles filled with the diagonal squares represent given alternative time frequency resource blocks in the present application.

In embodiment 6, the given time-frequency resource block is one time-frequency resource block in the first resource pool, the given alternative time-frequency resource block is associated to the given time-frequency resource block, the given reference signal is transmitted on the given time-frequency resource block; the measurements for the given reference signal are used to determine whether the given alternative time-frequency resource block belongs to the target resource pool.

As one embodiment, the first channel awareness is used to determine the target resource pool.

As an embodiment, the first channel sensing includes receiving a given signaling, measuring a given reference signal on a given time-frequency resource block, and determining whether a given alternative time-frequency resource block belongs to the target resource pool; the given time frequency resource block belongs to the first resource pool; the given alternative time frequency resource block is associated to the given time frequency resource block.

As an embodiment, the first channel sensing includes determining a first resource pool, receiving a given signaling, determining a given threshold, measuring a given reference signal on a given time-frequency resource block, and determining whether a given alternative time-frequency resource block belongs to the target resource pool; the given time frequency resource block belongs to the first resource pool; the given alternative time frequency resource block is associated to the given time frequency resource block.

As an embodiment, the given time-frequency resource block is one of the plurality of time-frequency resource blocks comprised by the first resource pool.

As an embodiment, the first resource pool comprises the given time-frequency resource block.

As an embodiment, the given reference signal is transmitted on the given time-frequency resource block.

As an embodiment, the given alternative time frequency resource block includes a first alternative time frequency resource block in the present application, and the given time frequency resource block includes the first time frequency resource block in the present application.

As an embodiment, the given alternative time frequency resource block includes a second alternative time frequency resource block in this application, and the given time frequency resource block includes the second time frequency resource block in this application.

As an embodiment, the given alternative time frequency resource block includes a fourth alternative time frequency resource block in this application, and the given time frequency resource block includes the fourth time frequency resource block in this application.

As an embodiment, the given signaling indicates the given time-frequency resource block.

As an embodiment, the given signaling indicates a time-frequency resource occupied by the given time-frequency resource block.

As one embodiment, the given signaling indicates the given reference signal.

As an embodiment, the given reference signal comprises a first reference signal in the present application.

As an embodiment, the given signaling indicates a first priority.

As an embodiment, the second signaling indicates a second priority.

As an embodiment, the first priority and the second priority are used together to determine a given threshold.

As an embodiment, the measurement values for the given reference signal are used to determine whether the given alternative time-frequency resource block belongs to the target resource pool.

As an embodiment, the measurement value for the given reference signal is above the given threshold, the given alternative time-frequency resource block does not belong to the target resource pool.

As an embodiment, the measurement value for the given reference signal is below the given threshold, the given alternative time-frequency resource block belongs to the target resource pool.

As an embodiment, the measurement value for the given reference signal is equal to the given threshold value, and the given alternative time-frequency resource block belongs to the target resource pool.

As an embodiment, when the measurement for the given reference signal is above the given threshold, the given alternative time-frequency resource block does not belong to the target resource pool; the given alternative time-frequency resource block belongs to the target resource pool when the measurement for the given reference signal is not above the given threshold.

As an embodiment, the given signaling comprises one SCI.

As an embodiment, the given threshold is a positive integer.

As an embodiment, the given threshold is a non-positive integer.

As an example, the unit of the given threshold is dBm (decibels).

As an example, the unit of the given threshold is dB (decibel).

As an example, the unit of the given threshold is mW (milliwatt).

As one embodiment, the unit of the given threshold is W (watts).

For one embodiment, the given threshold is one of a plurality of first type thresholds.

For one embodiment, any one of the plurality of first type thresholds is equal to (-128+ (n-1) × 2) dBm, where n is a positive integer no greater than 65.

As one embodiment, the plurality of first class thresholds are [ -infinity dBm, -128dBm, -126dBm,. -, 0dBm, infinity dBm ], respectively.

As one example, the given threshold is equal to (-128+ (n-1). times.2) dBm, n being a positive integer no greater than 65.

As an embodiment, the given threshold is one of [ -infinity dBm, -128dBm, -126dBm,. -, 0dBm, infinity dBm ].

For one embodiment, the first priority and the second priority are used together to determine an index of the given threshold value among the plurality of first class threshold values.

For one embodiment, the plurality of first class thresholds includes a plurality of threshold lists, and any one of the plurality of threshold lists includes a positive integer number of first class thresholds.

As an embodiment, the positive integer number of first class thresholds included in any one of the plurality of threshold lists is one of the plurality of first class thresholds.

As an embodiment, the first threshold list is said one of the plurality of threshold lists, the first threshold list includes a positive integer of first class thresholds, and the given threshold is one of the positive integer of first class thresholds included in the first threshold list.

As one embodiment, the second priority is used to indicate an index of the first threshold list in the plurality of threshold lists, the first priority is used to indicate an index of the given threshold in the positive integer number of first-class thresholds included in the first threshold list.

For one embodiment, an index of the given threshold in the plurality of first class thresholds is equal to a sum of C1 times and B1 plus 1 of the first priority, B being a positive integer no greater than 12, C being a positive integer.

For one embodiment, the index of the given threshold in the plurality of first-class thresholds is equal to the sum of C2 times and B2 of the second priority plus 1, B2 is a positive integer no greater than 12, and C2 is a positive integer.

For one embodiment, the index of the given threshold in the plurality of first class thresholds is equal to the sum of C1 times B1 and the first priority, plus 1, with C1 being a positive integer.

For one embodiment, the index of the given threshold in the plurality of first class thresholds is equal to the sum of C2 times B2 and the second priority, plus 1, with C2 being a positive integer.

As an example, C1 is equal to 8.

As one example, C1 is equal to 10.

As an example, C2 is equal to 8.

As one example, C2 is equal to 10.

As an embodiment, the phrase "performing first channel sensing within a first resource pool" includes: respectively receiving positive integer numbers of first class signaling on the plurality of time frequency resource blocks included in the first resource pool; respectively measuring positive integer first type reference signals on positive integer first type time frequency resource blocks; and respectively judging whether the positive integer number of the first-class alternative time frequency resource blocks belong to the target resource pool.

As an embodiment, the positive integer number of first class signaling indicates the positive integer number of first class time-frequency resource blocks and the positive integer number of first class reference signals, respectively.

As an embodiment, the positive integer number of first type reference signals are transmitted on the positive integer number of first type time-frequency resource blocks, respectively.

As an embodiment, any one of the positive integer number of first class time frequency resource blocks is one of a plurality of time frequency resource blocks included in the first resource pool.

As an embodiment, the positive integer number of alternative time frequency resource blocks of the first class are associated to the positive integer number of time frequency resource blocks of the first class, respectively.

As an embodiment, the phrase "performing first channel sensing within a first resource pool" includes: determining a first resource pool, and respectively receiving a positive integer of first class signaling; respectively determining positive integer first class threshold values; respectively measuring positive integer first type reference signals on positive integer first type time frequency resource blocks; and respectively judging whether the positive integer number of the first-class alternative time frequency resource blocks belong to the target resource pool.

As an embodiment, the given signaling is any one of the positive integer number of first type signaling.

As an embodiment, the given time-frequency resource block is one of the positive integer number of first class time-frequency resource blocks indicated by the given signaling.

As an embodiment, the given reference signal is one of the positive integer number of reference signals of a first type transmitted on the given time-frequency resource block.

As an embodiment, the given alternative time frequency resource block is one of the positive integer number of alternative time frequency resource blocks of the first class associated to the given time frequency resource block.

As an embodiment, a measurement value for any one of the positive integer number of first class reference signals is used to determine whether one of the positive integer number of first class alternative time frequency resource blocks belongs to the target resource pool.

As an embodiment, positive integers of the measured values for the positive integer number of the first class reference signals are respectively used to determine whether the positive integer number of the first class candidate time-frequency resource blocks belongs to the target resource pool.

As an embodiment, the positive integer number of first class time frequency resource blocks corresponds to the positive integer number of first class alternative time frequency resource blocks one to one.

In an embodiment, the first resource pool includes the positive integer number of first class time-frequency resource blocks.

As an embodiment, the first signaling and the first channel awareness are jointly used for determining the target resource pool.

As an embodiment, the first set of reference resources of the first signaling indication and the first channel sensing are jointly used for determining the target resource pool.

As an embodiment, performing the first channel sensing in the first resource pool is used to determine that Q first class alternative time frequency resource blocks of the positive integer number of first class alternative time frequency resource blocks belong to the target resource pool, the positive integer number of first class alternative time frequency resource blocks being associated to the positive integer number of first class time frequency resource blocks of the first resource pool; the first signaling indicates that the positive integer number of time-frequency resource blocks included in the first reference resource set belong to the target resource pool; the Q first alternative time frequency resource blocks are overlapped with the positive integer time frequency resource blocks included in the first reference resource set, and Q is a positive integer.

As an embodiment, at least one of the positive integer number of time frequency resource blocks included in the first reference resource set is the same as one of the Q first class alternative time frequency resource blocks.

As an embodiment, at least one of the positive integer number of time frequency resource blocks included in the first reference resource set is different from one of the Q first class alternative time frequency resource blocks.

As an embodiment, performing the first channel sensing in the first resource pool is used to determine that Q first class alternative time frequency resource blocks of the positive integer number of first class alternative time frequency resource blocks belong to the target resource pool, the positive integer number of first class alternative time frequency resource blocks being associated to the positive integer number of first class time frequency resource blocks of the first resource pool; the first signaling indicates that the positive integer number of time-frequency resource blocks included in the first reference resource set belong to the target resource pool; the Q first-class alternative time frequency resource blocks are not overlapped with the positive integer number of time frequency resource blocks included in the first reference resource set.

As an embodiment, any one of the positive integer number of time frequency resource blocks included in the first reference resource set is different from any one of the Q first class alternative time frequency resource blocks.

As an embodiment, performing the first channel sensing in the first resource pool is used to determine that Q first class alternative time frequency resource blocks of the positive integer number of first class alternative time frequency resource blocks belong to the target resource pool, the positive integer number of first class alternative time frequency resource blocks being associated to the positive integer number of first class time frequency resource blocks of the first resource pool; the first signaling indicates that the positive integer number of time-frequency resource blocks included in the first reference resource set do not belong to the target resource pool; the Q first alternative time frequency resource blocks are overlapped with the positive integer number of time frequency resource blocks included in the first reference resource set.

As an embodiment, the first priority and the second priority are two positive integers, respectively.

As an example, the first priority is a non-negative integer no greater than 12.

As an example, the second priority is a non-negative integer no greater than 12.

As an embodiment, the first priority is one of P positive integers, and P is a positive integer.

As an embodiment, the second priority is one of P positive integers, where P is a positive integer.

As an embodiment, the first priority is a positive integer from 1 to P.

As an embodiment, the second priority is a positive integer from 1 to P.

As an embodiment, one of the positive integer number of first type signaling indicates the first priority; the second signaling carries the second priority.

As an embodiment, the given signaling indicates the first priority, and the second signaling carries the second priority.

As one embodiment, the given reference signal includes a first sequence.

As an embodiment, a first sequence is used to generate the given reference signal.

As an example, the first Sequence is a Pseudo-Random Sequence (Pseudo-Random Sequence).

As one example, the first Sequence is a Low Peak to Average Power Ratio (Low-PAPR Sequence, Low-Peak to Average Power Ratio).

As an embodiment, the first sequence is a Gold sequence.

As one embodiment, the first sequence is an M-sequence.

As an embodiment, the first sequence is a ZC (zadoff-Chu) sequence.

As an embodiment, the first Sequence sequentially undergoes Sequence Generation (Sequence Generation), Discrete Fourier Transform (DFT), Modulation (Modulation), Resource Element Mapping (Resource Element Mapping), and wideband symbol Generation (Generation) to obtain the given reference signal.

As an embodiment, the first sequence is sequentially subjected to sequence generation, resource element mapping, and wideband symbol generation to obtain the first signal.

As an embodiment, the first sequence is mapped onto a positive integer number of res(s).

As an embodiment, the given reference signal is used for data demodulation.

As an embodiment, the given reference signal is used for sounding channel state information.

As one embodiment, the given Reference Signal includes a SL DMRS (Demodulation Reference Signal).

For one embodiment, the given reference signal includes PSCCH DMRS.

For one embodiment, the given reference signal includes PSSCH DMRS.

As an embodiment, the given reference signal comprises a UL (Uplink) DMRS.

As one embodiment, the given Reference Signal includes a SL CSI-RS (Channel State Information Reference Signal).

As an embodiment, the given Reference Signal comprises a UL SRS (Sounding Reference Signal).

As one example, the given reference Signal comprises a S-SS/PSBCH Block (Sidelink Synchronization Signal/Physical Sidelink Broadcast Channel Block).

As an embodiment, the given reference signal is measured on the given time domain resource block.

As an embodiment, the measuring for a given time-frequency resource block comprises measuring a given reference signal on the given time-frequency resource block.

As an embodiment, the given time domain resource block includes time-frequency resources occupied by the given reference signal.

As an embodiment, the positive integer number of first class time-frequency resource blocks respectively include time-frequency resources occupied by the positive integer number of first class reference signals.

As an embodiment, the phrase "measuring a given reference signal on a given time-frequency resource block" includes performing, on the given time-frequency resource block, reception based on coherent detection on the time-frequency resources occupied by the given reference signal, that is, the first node performs coherent reception on signals on the time-frequency resources occupied by the given reference signal with the first sequence included in the given reference signal, and measures signal energy obtained after the coherent reception.

As an embodiment, the phrase "measuring a given reference signal on a given time-frequency resource block" includes performing coherent detection-based reception on the time-frequency resources occupied by the given reference signal on the given time-frequency resource block, that is, the first node performs coherent reception on signals on the time-frequency resources occupied by the given reference signal by using the first sequence included by the given reference signal, and then performs linear averaging on the signal powers received on the plurality of REs included by the time-frequency resources occupied by the given reference signal, so as to obtain the reception power.

As an embodiment, the phrase "measuring a given reference signal on a given time-frequency resource block" includes performing coherent detection-based reception on the time-frequency resources occupied by the given reference signal on the given time-frequency resource block, i.e. the first node performs coherent reception on the signals on the time-frequency resources occupied by the given reference signal with the first sequence included by the given reference signal and averages the received signal energy over the time domain and the frequency domain to obtain the reception power.

As an embodiment, the phrase "measuring a given reference signal on a given time-frequency resource block" includes performing, on the given time-frequency resource block, reception based on energy detection on the time-frequency resources occupied by the given reference signal, that is, the first node senses the energy of the wireless signal on the plurality of REs included in the time-frequency resources occupied by the given reference signal, respectively, and averages over the plurality of REs included in the time-frequency resources occupied by the given reference signal to obtain the reception power.

As an embodiment, the phrase "measuring a given reference signal over a given time-frequency resource block" comprises performing energy detection based reception over the given time-frequency resource block, i.e. the first node receives the power of the given reference signal over the given time-frequency resource block, and linearly averaging the received power of the given reference signal to obtain a signal strength indication.

As an embodiment, the phrase "measuring a given reference signal over a given time-frequency resource block" comprises performing energy detection based reception over the given time-frequency resource block, i.e. the first node senses the energy of the wireless signal over the given time-frequency resource block and averages over time to obtain a signal strength indication.

As an embodiment, the phrase "measuring a given reference signal on a given time-frequency resource block" includes receiving based on blind detection on the given time-frequency resource block, that is, the first node receives a signal on the given time-frequency resource block and performs a decoding operation, and determines whether decoding is correct according to CRC bits, so as to obtain channel quality of the given reference signal on the time-frequency resources occupied by the given reference signal.

As an embodiment, the given alternative time-frequency resource block is associated to the given time-frequency resource block.

As an embodiment, the given time-frequency resource block is associated with the given alternative time-frequency resource block.

As an embodiment, the given time frequency resource block is orthogonal to the given alternative time frequency resource block.

As an embodiment, the given time-frequency resource block and the given alternative time-frequency resource block are orthogonal in time domain, and the given time-frequency resource block and the given alternative time-frequency resource block occupy the same frequency domain resource.

As an embodiment, the given time-frequency resource block comprises L consecutive frequency-domain resource blocks, the given alternative time-frequency resource block comprises L consecutive frequency-domain resource blocks, and the L consecutive frequency-domain resource blocks in the given time-frequency resource block are the same as the L consecutive frequency-domain resource blocks in the given alternative time-frequency resource block.

As one embodiment, L is a positive integer.

As an embodiment, the given time-frequency resource block and the given alternative time-frequency resource block are orthogonal in time domain, and the positive integer number of subcarriers occupied by the given time-frequency resource block in frequency domain is the same as the positive integer number of subcarriers occupied by the given alternative time-frequency resource block in frequency domain.

As an embodiment, the given time-frequency resource block and the given alternative time-frequency resource block are orthogonal in time domain, and the given time-frequency resource block and the given alternative time-frequency resource block are also orthogonal in frequency domain.

As an embodiment, the given Time frequency resource block and the given alternative Time frequency resource block are two Time frequency resource blocks of TDM (Time Division Multiplexing) in a sidelink resource pool.

As an embodiment, the given time frequency resource block and the given alternative time frequency resource block are two time frequency resource blocks of TDM in a sidelink reception resource pool.

As an embodiment, the given time-frequency resource block is earlier in the time domain than the given alternative time-frequency resource block.

As an embodiment, the given time-frequency resource block and the given alternative time-frequency resource block are two time-frequency resource blocks of a TDM in a sidelink resource pool, and the given time-frequency resource block is earlier in time domain than the given alternative time-frequency resource block.

As an embodiment, the given alternative time-frequency resource block and the given time-frequency resource block occupy the same frequency-domain resource at a first time difference in a time-domain interval.

As an embodiment, the given alternative time-frequency resource block and the given time-frequency resource block have a first time difference in time domain, and the L consecutive frequency-domain resource blocks included in the frequency domain by the given alternative time-frequency resource block are the same as the L consecutive frequency-domain resource blocks included in the frequency domain by the given time-frequency resource block.

For one embodiment, the first time difference comprises a positive integer number of time domain resource units.

As one embodiment, the first time difference includes a positive integer number of slots.

As an embodiment, the first time difference comprises a positive integer number of multicarrier symbols.

As an embodiment, the first resource pool includes a given time-frequency resource group, where the given time-frequency resource group includes multiple time-frequency resource blocks, where any two adjacent time-frequency resource blocks in the multiple time-frequency resource blocks included in the given time-frequency resource group have equal time-frequency interval, and the given time-frequency resource block is one time-frequency resource block in the given time-frequency resource group.

As an embodiment, the frequency-domain resources occupied by the plurality of time-frequency resource blocks included in the given time-frequency resource group are all the same.

As an embodiment, any time-frequency resource block in the given time-frequency resource group includes L consecutive frequency-domain resource blocks in the frequency domain, which are the same as L consecutive frequency-domain resource blocks included in the frequency domain by the given time-frequency resource block.

As an embodiment, the given time-frequency resource block is one of the multiple time-frequency resource blocks included in the given time-frequency resource group, the given alternative time-frequency resource block is one of the multiple time-frequency resource blocks included in the given time-frequency resource group, and a time-frequency interval between the given alternative time-frequency resource block and a latest time-frequency resource block in the given time-frequency resource group is equal to a time-frequency interval between any two adjacent time-frequency resource blocks in the multiple time-frequency resource blocks included in the given time-frequency resource group.

As an embodiment, the given alternative time-frequency resource block is later in time domain than any time-frequency resource block in the given group of time-frequency resources.

As an embodiment, the L consecutive frequency-domain resource blocks comprised in the frequency domain by the given alternative time-frequency resource block are the same as the L consecutive frequency-domain resource blocks comprised by any time-frequency resource block in the given time-frequency resource group.

Example 7

Embodiment 7 illustrates a flowchart for determining whether a first alternative time-frequency resource block is selected as a target time-frequency resource block according to an embodiment of the present application, as shown in fig. 7. In fig. 7, a target resource pool is determined in step S701; in step S702, it is determined whether the first alternative time-frequency resource block belongs to the first reference resource set; in step S703, it is determined whether the measured value for the first time-frequency resource block is higher than the measured value for the second time-frequency resource block; when the first alternative time-frequency resource block belongs to a first reference resource set, executing step S703; when the first alternative time frequency resource block does not belong to the first reference resource set, executing the step S705, wherein the first alternative time frequency resource block is not selected as the target time frequency resource block; when the measured value for the first time-frequency resource block is lower than or equal to the measured value for the second time-frequency resource block, executing step S704, and selecting the first alternative time-frequency resource block as a target time-frequency resource block; and when the measured value for the first time-frequency resource block is higher than the measured value for the second time-frequency resource block, executing step S705, wherein the first alternative time-frequency resource block is not selected as the target time-frequency resource block.

In embodiment 7, the first alternative time-frequency resource block is associated to a first time-frequency resource block; the first time-frequency resource block is one of the plurality of time-frequency resource blocks included in the first resource pool; the measurement value for the first time frequency resource block and whether the first candidate time frequency resource block belongs to the first reference resource set are used together to determine whether the first candidate time frequency resource block is selected as the target time frequency resource block.

As an embodiment, the first time-frequency resource block is one of the plurality of time-frequency resource blocks comprised by the first resource pool, the first alternative time-frequency resource block being associated to the first time-frequency resource block.

As one embodiment, a first reference signal is transmitted on the first block of time and frequency resources.

As an embodiment, the first time-frequency resource block includes a time-frequency resource occupied by the first reference signal.

As an embodiment, a given time-frequency resource block in the present application includes the first time-frequency resource block.

As an embodiment, a given alternative time-frequency resource block in the present application comprises the first alternative time-frequency resource block.

As an example, a given reference signal in this application includes the first reference signal in this application.

As an embodiment, the phrase "measuring a given reference signal over a given time-frequency resource block" includes measuring the first reference signal over the first time-frequency resource block.

As an embodiment, the measurement for a given time-frequency resource block includes the measurement for the first time-frequency resource block in the present application.

As one embodiment, the measuring for the first block of time-frequency resources comprises measuring the first reference signal on the first block of time-frequency resources.

As an embodiment, a given alternative time-frequency resource block in the present application is associated to a given time-frequency resource block in the present application; the given time frequency resource block comprises the first time frequency resource block, and the given alternative time frequency resource block comprises the first alternative time frequency resource block.

As an embodiment, the second time frequency resource block is one of the plurality of time frequency resource blocks comprised by the first resource pool, the second alternative time frequency resource block being associated to the second time frequency resource block.

For one embodiment, a second reference signal is transmitted on the second time-frequency resource block.

As an embodiment, the second time-frequency resource block includes time-frequency resources occupied by the second reference signal.

As an embodiment, a given time-frequency resource block in the present application includes the second time-frequency resource block.

As an embodiment, a given alternative time-frequency resource block in the present application comprises the second alternative time-frequency resource block.

As an example, a given reference signal in this application includes the second reference signal.

As an embodiment, the phrase "measuring a given reference signal on a given time-frequency resource block" includes measuring the second reference signal on the second time-frequency resource block.

As an embodiment, the measurement for a given time-frequency resource block includes the measurement for a second time-frequency resource block in the present application.

As an embodiment, the measuring for the second time-frequency resource block comprises measuring the second reference signal on the second time-frequency resource block.

As an embodiment, a given alternative time-frequency resource block in the present application is associated to a given time-frequency resource block in the present application; the given time frequency resource block comprises the second time frequency resource block, and the given alternative time frequency resource block comprises the second alternative time frequency resource block.

As an embodiment, the first alternative time-frequency resource block and the second alternative time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target resource pool; the first time frequency resource block and the second time frequency resource block are two time frequency resource blocks in a plurality of time frequency resource blocks included in the first resource pool; the first alternative time-frequency resource block is associated to the first time-frequency resource block; the second alternative time frequency resource block is associated to the second time frequency resource block.

As an embodiment, the first alternative time-frequency resource block is any one of the plurality of time-frequency resource blocks included in the target resource pool; the first time-frequency resource block is one of a plurality of time-frequency resource blocks included in the first resource pool; the first alternative time frequency resource block is associated to the first time frequency resource block.

As an embodiment, the second alternative time frequency resource block is a time frequency resource block, which is different from the first alternative time frequency resource block, in the plurality of time frequency resource blocks included in the target resource pool; the second time frequency resource block is one of a plurality of time frequency resource blocks included in the first resource pool; the second alternative time frequency resource block is associated to the second time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the first reference resource set comprises the first alternative time frequency resource block and the second alternative time frequency resource block; when the measured value aiming at the first time frequency resource block is lower than the measured value aiming at the second time frequency resource block, the first alternative time frequency resource block is selected as the target time frequency resource block; when the measured value for the first time-frequency resource block is higher than the measured value for the second time-frequency resource block, the first alternative time-frequency resource is not selected as the target time-frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the first reference resource set comprises the first alternative time frequency resource block and the second alternative time frequency resource block; when the measured value aiming at the first time frequency resource block is lower than the measured value aiming at the second time frequency resource block, the first alternative time frequency resource is selected as the target time frequency resource block; when the measured value aiming at the first time frequency resource block is equal to the measured value aiming at the second time frequency resource block, the first alternative time frequency resource is selected as the target time frequency resource block; when the measured value for the first time-frequency resource block is higher than the measured value for the second time-frequency resource block, the first alternative time-frequency resource is not selected as the target time-frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the first reference resource set comprises the first alternative time frequency resource block and the second alternative time frequency resource block; when the measured value aiming at the first time frequency resource block is lower than the measured value aiming at the second time frequency resource block, the first alternative time frequency resource is selected as the target time frequency resource block; and when the measured value aiming at the first time frequency resource block is higher than the measured value aiming at the second time frequency resource block, the second alternative time frequency resource is selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the first reference resource set comprises the first alternative time frequency resource block and the second alternative time frequency resource block; when the measured value aiming at the first time frequency resource block is lower than the measured value aiming at the second time frequency resource block, the first alternative time frequency resource is selected as the target time frequency resource block; when the measured value aiming at the first time frequency resource block is equal to the measured value aiming at the second time frequency resource block, the first alternative time frequency resource is selected as the target time frequency resource block; and when the measured value aiming at the first time frequency resource block is higher than the measured value aiming at the second time frequency resource block, the second alternative time frequency resource is not selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the measurement value for the first time-frequency resource block is lower than the measurement value for the second time-frequency resource block; when the first alternative time frequency resource block and the second alternative time frequency resource block both belong to the first reference resource set, the first alternative time frequency resource block is selected as the target time frequency resource block; when the first alternative time frequency resource block belongs to the first reference resource set and the second alternative time frequency resource block does not belong to the first reference resource set, the first alternative time frequency resource block is selected as the target time frequency resource block; when the first alternative time frequency resource block does not belong to the first reference resource set and the second alternative time frequency resource block belongs to the first reference resource set, the first alternative time frequency resource block is not selected as the target time frequency resource block; when the first alternative time frequency resource block and the second alternative time frequency resource block do not belong to the first reference resource set, the first alternative time frequency resource block is not selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the measurement value for the first time-frequency resource block is higher than the measurement value for the second time-frequency resource block; when the first alternative time frequency resource block and the second alternative time frequency resource block both belong to the first reference resource set, the first alternative time frequency resource block is not selected as the target time frequency resource block; when the first alternative time frequency resource block belongs to the first reference resource set and the second alternative time frequency resource block does not belong to the first reference resource set, the first alternative time frequency resource block is selected as the target time frequency resource block; when the first alternative time frequency resource block does not belong to the first reference resource set and the second alternative time frequency resource block belongs to the first reference resource set, the first alternative time frequency resource block is not selected as the target time frequency resource block; when the first alternative time frequency resource block and the second alternative time frequency resource block do not belong to the first reference resource set, the first alternative time frequency resource block is not selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the first alternative time frequency resource block belongs to the first reference resource set, and the second alternative time frequency resource block does not belong to the first reference resource set; the measurement value for the first time-frequency resource block is higher than the measurement value for the second time-frequency resource block; when the difference value between the measured value aiming at the first time frequency resource block and the measured value aiming at the second time frequency resource block is lower than a first target threshold value, the first alternative time frequency resource block is selected as the target time frequency resource block; and when the difference value of the measured value aiming at the first time-frequency resource block and the measured value aiming at the second time-frequency resource block is higher than a first target threshold value, the first alternative time-frequency resource block is not selected as the target time-frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the first reference resource set comprises the first alternative time frequency resource block and the second alternative time frequency resource block; and the measured value aiming at the first time frequency resource block is lower than the measured value aiming at the second time frequency resource block, and the first alternative time frequency resource block in the first alternative time frequency resource block and the second alternative time frequency resource block is selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the first reference resource set comprises the first alternative time frequency resource block and the second alternative time frequency resource block; and the measured value aiming at the first time frequency resource block is higher than the measured value aiming at the second time frequency resource block, and the first alternative time frequency resource is not selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the first reference resource set comprises the first alternative time frequency resource block and the second alternative time frequency resource block; and the measured value aiming at the first time frequency resource block is equal to the measured value aiming at the second time frequency resource block, and the first alternative time frequency resource block in the first alternative time frequency resource block and the second alternative time frequency resource block is selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the measurement value for the first time-frequency resource block is lower than the measurement value for the second time-frequency resource block; the first alternative time frequency resource block and the second alternative time frequency resource block both belong to the first reference resource set; and the first alternative time frequency resource block in the first alternative time frequency resource block and the second alternative time frequency resource block is selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the measurement value for the first time-frequency resource block is lower than the measurement value for the second time-frequency resource block; the first alternative time frequency resource block does not belong to the first reference resource set, the second alternative time frequency resource block belongs to the first reference resource set, and the first alternative time frequency resource block is not selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the measurement value for the first time-frequency resource block is lower than the measurement value for the second time-frequency resource block; the first alternative time frequency resource block belongs to the first reference resource set, and the second alternative time frequency resource block does not belong to the first reference resource set; and the first alternative time frequency resource block in the first alternative time frequency resource block and the second alternative time frequency resource block is selected as the target time frequency resource block.

As an embodiment, the first alternative time frequency resource block and the second alternative time frequency resource block are any two time frequency resource blocks in the multiple time frequency resource blocks included in the target time frequency resource block, respectively; the measurement value for the first time-frequency resource block is lower than the measurement value for the second time-frequency resource block; neither the first alternative time-frequency resource block nor the second alternative time-frequency resource block belongs to the first reference resource set; and the first alternative time frequency resource block is not selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the measurement value for the first time-frequency resource block is higher than the measurement value for the second time-frequency resource block; the first alternative time frequency resource block and the second alternative time frequency resource block both belong to the first reference resource set; and the first alternative time frequency resource block is not selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the measurement value for the first time-frequency resource block is higher than the measurement value for the second time-frequency resource block; the first alternative time frequency resource block belongs to the first reference resource set, and the second alternative time frequency resource block does not belong to the first reference resource set; and the first alternative time frequency resource block in the first alternative time frequency resource block and the second alternative time frequency resource block is selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the measurement value for the first time-frequency resource block is higher than the measurement value for the second time-frequency resource block; the first alternative time frequency resource block does not belong to the first reference resource set, and the second alternative time frequency resource block belongs to the first reference resource set; and the first alternative time frequency resource block is not selected as the target time frequency resource block.

As an embodiment, the first candidate time-frequency resource block and the second candidate time-frequency resource block are any two time-frequency resource blocks in the plurality of time-frequency resource blocks included in the target time-frequency resource block; the measurement value for the first time-frequency resource block is higher than the measurement value for the second time-frequency resource block; when neither the first candidate time frequency resource block nor the second candidate time frequency resource block belongs to the first reference resource set, the first candidate time frequency resource block is not selected as the target time frequency resource block.

As an embodiment, the measurement values for the first block of time-frequency resources comprise RSRP (Reference Signal Received Power) of the first Reference Signal measured on the first block of time-frequency resources.

As an embodiment, the measurement value for the first time-frequency resource block comprises RSSI (Received Signal Strength Indication) of the first reference Signal measured on the first time-frequency resource block.

As one embodiment, the measurement value for the first time-frequency resource block includes RSRQ (Reference Signal Receiving Quality) of the first Reference Signal measured on the first time-frequency resource block.

As an embodiment, the measurement value for the first time-frequency resource block includes SNR (Signal to Noise Ratio).

As an embodiment, the measurement value for the first time-frequency resource block includes SINR (Signal to Interference plus Noise Ratio).

As one embodiment, the measurement value for the first time-frequency resource block includes a SL SINR.

As one embodiment, the measurement values for the first time-frequency resource block comprise SL RSRP.

As an embodiment, the measurement value for the first time-frequency resource block includes L1-RSRP (Layer 1-RSRP, Layer 1-reference signal received power).

As an embodiment, the measurement quantity for the first time-frequency resource block includes L3-RSRP (Layer 3-RSRP, Layer 3-reference signal received power).

As an embodiment, the measurement value for the first time-frequency resource block comprises a SL RSSI.

As one embodiment, the measurement values for the first time-frequency resource block comprise SL RSRQ.

As an embodiment, the measurement value for the first time-frequency resource block includes a CQI (Channel Quality Indicator).

As an embodiment, the measurement value for the first time-frequency resource block comprises a SL CQI.

As an embodiment, the measurement values for the second time-frequency resource block comprise RSRP of the second reference signal measured over the second time-frequency resource block.

As an embodiment, the measurement value for the second time-frequency resource block comprises an RSSI of the second reference signal measured on the second time-frequency resource block.

As an embodiment, the measurement values for the second time-frequency resource block comprise RSRQ of the second reference signal measured over the second time-frequency resource block.

As an embodiment, the unit of the measurement value for the first time-frequency resource block is dBm.

As an embodiment, the unit of the measurement value for the first time-frequency resource block is.

As an embodiment, the unit of the measurement value for the first time-frequency resource block is mW.

As an embodiment, the unit of the measurement value for the first time-frequency resource block is W.

As an embodiment, the unit of the measurement value for the second time-frequency resource block is dBm.

As an embodiment, the unit of the measurement value for the second time-frequency resource block is.

As an embodiment, the unit of the measurement value for the second time-frequency resource block is mW.

As an embodiment, the unit of the measurement value for the second time-frequency resource block is W.

Example 8

Embodiment 8 illustrates a schematic diagram of a relationship between a first resource pool, a second resource pool, a third time domain resource block, a third alternative time frequency resource block, and a target resource pool according to an embodiment of the present application, as shown in fig. 8. In FIG. 8, the dashed box represents the first resource pool in the present application; a rectangle in a dotted line square block represents a time-frequency resource block in the first resource pool; the dotted and dashed box represents the second resource pool in this application; the diagonal filled rectangles represent the third time-frequency resource block in this application; the bold solid line box represents the target resource pool in this application; the rectangles filled with the diagonal squares represent the third alternative time frequency resource block in this application.

In embodiment 8, the second resource pool includes the first resource pool and a third time-frequency resource block, where the third time-frequency resource block does not belong to the first resource pool; the third alternative time frequency resource block is associated to the third time frequency resource block; the first signaling indicates whether the first reference resource set including the third candidate time frequency resource block is used for determining whether the third candidate time frequency resource block belongs to the target resource pool.

For one embodiment, the second resource pool is used for sidelink transmissions.

For one embodiment, the second resource pool includes all or part of the resources of the sidelink resource pool.

For one embodiment, the second resource pool includes all or part of resources of a sidelink transmission resource pool.

For one embodiment, the second resource pool includes all or part of the resources of the secondary link reception resource pool.

For one embodiment, the second pool of resources comprises PSCCHs.

For one embodiment, the second resource pool includes a PSSCH.

For one embodiment, the second resource pool includes a PSFCH.

For one embodiment, the second resource pool is used for transmitting SL RSs.

For one embodiment, the second resource pool includes a plurality of REs.

As an embodiment, any RE of the REs included in the second resource pool occupies one multicarrier symbol in the time domain and one subcarrier in the frequency domain.

As an embodiment, the second resource pool includes a plurality of time domain resource blocks in the time domain, and the second resource pool includes a plurality of frequency domain resource blocks in the frequency domain.

For an embodiment, the second resource pool includes a plurality of time-frequency resource blocks.

As an embodiment, any time-frequency resource block in the multiple time-frequency resource blocks included in the second resource pool occupies a positive integer of time slots in the time domain, and occupies a positive integer of consecutive sub-channels in the frequency domain.

As an embodiment, any time-frequency resource block in the plurality of time-frequency resource blocks included in the second resource pool occupies a positive integer number of multicarrier symbols in a time domain and occupies a positive integer number of continuous subchannels in a frequency domain.

As an embodiment, any time-frequency resource block in the multiple time-frequency resource blocks included in the second resource pool occupies a positive integer of time slots in a time domain, and occupies a positive integer of consecutive physical resource blocks in a frequency domain.

As an embodiment, any time-frequency resource block in the plurality of time-frequency resource blocks included in the second resource pool occupies a positive integer number of multicarrier symbols in a time domain, and occupies a positive integer number of consecutive physical resource blocks in a frequency domain.

In an embodiment, any one of the plurality of time-frequency resource blocks included in the second resource pool includes a positive integer number of res(s).

As an embodiment, the plurality of time domain resource blocks comprised by the second resource pool in the time domain are Pre-configured (Pre-configured).

As an embodiment, the plurality of time domain resource blocks comprised by the second resource pool in the time domain are Configured by higher layer signaling (Configured).

As an embodiment, the second resource pool is indicated by the third signaling.

For one embodiment, the second resource pool is used to determine the first resource pool.

For one embodiment, the first resource pool includes time-frequency resource blocks within a first sensing window in the second resource pool.

For one embodiment, the first sensing window includes a plurality of time domain resource blocks.

As one embodiment, the first sensing window is 10ms (milliseconds).

As one embodiment, the first sensing window is 1000ms (milliseconds).

As an embodiment, a third time frequency resource block is one of the plurality of time frequency resource blocks included in the second resource pool, the first node does not receive signals in the third time frequency resource block, and the third time frequency resource block does not belong to the first resource pool.

As an embodiment, a third time frequency resource block is one time frequency resource block of the multiple time frequency resource blocks included in the second resource pool, the first node gives up receiving signals in the third time frequency resource block, and the third time frequency resource block does not belong to the first resource pool.

As an embodiment, a third time frequency resource block is one of the plurality of time frequency resource blocks included in the second resource pool, the third time frequency resource block is not monitored by the first node, and the third time frequency resource block does not belong to the first resource pool.

As an embodiment, a third time-frequency resource block is one of the multiple time-frequency resource blocks included in the second resource pool, the first node transmits a signal on the third time-frequency resource block, the third time-frequency resource block and the third time-frequency resource block overlap in a time domain, and the third time-frequency resource block does not belong to the first resource pool.

As an embodiment, a third time frequency resource block is one of the plurality of time frequency resource blocks included in the second resource pool, and the first node gives up performing the first channel sensing in the third time frequency resource block, where the third time frequency resource block does not belong to the first resource pool.

As an embodiment, a third time frequency resource block is one of the plurality of time frequency resource blocks comprised by the second resource pool, the third time frequency resource block not belonging to the first resource pool, a third alternative time frequency resource block being associated to the third time frequency resource block.

As an embodiment, a given alternative time-frequency resource block in the present application is associated to a given time-frequency resource block in the present application; the given time frequency resource block comprises the third time frequency resource block, and the given alternative time frequency resource block comprises the third alternative time frequency resource block.

As an embodiment, the first signaling indicates the first reference resource set, where the first reference resource set includes the third alternative time frequency resource block, and the third alternative time frequency resource block belongs to the target resource pool.

As an embodiment, the first signaling indicates the first reference resource set, the third alternative time frequency resource block is one time frequency resource block in the first reference resource set, and the third alternative time frequency resource block belongs to the target resource pool.

As an embodiment, the first signaling indicates the first reference resource set, the third alternative time frequency resource block is different from any time frequency resource block included in the first reference resource set, and the third alternative time frequency resource block does not belong to the target resource pool.

As an embodiment, the first signaling indicates the first reference resource set, and when the first reference resource set includes the third alternative time frequency resource block, the third alternative time frequency resource block is one of the plurality of time frequency resource blocks included in the target resource pool; and when the third alternative time frequency resource block is different from any time frequency resource block in the first reference resource set, the third alternative time frequency resource block is different from any time frequency resource block in the plurality of time frequency resource blocks included in the target resource pool.

Example 9

Embodiment 9 illustrates a flowchart for determining whether a fourth alternative time-frequency resource block belongs to a target resource pool according to an embodiment of the present application, as shown in fig. 9. In fig. 9, a first resource pool is determined in step S901; determining a first threshold in step S902; determining in step S903 whether a measurement value for a fourth time-frequency resource block is higher than a first threshold; when the measured value for the fourth alternative time-frequency resource block is lower than or equal to the first threshold, executing step S906, where the fourth alternative time-frequency resource block belongs to the target resource pool; when the measured value for the fourth time-frequency resource block is higher than the first threshold, executing step S904, and determining whether the fourth alternative time-frequency resource block belongs to the first reference resource set; when the fourth alternative time frequency resource block does not belong to the first reference resource set, step S907 is executed, and the fourth alternative time frequency resource block does not belong to the target resource pool; when the fourth alternative time frequency resource block belongs to the first reference resource set, executing step S905, and determining whether a measurement value for the fourth time frequency resource block is higher than a sum of the first threshold and the first offset value; when the measured value for the fourth alternative time-frequency resource block is lower than or equal to the sum of the first threshold and the first offset value, executing step S906, where the fourth alternative time-frequency resource block belongs to the target resource pool; when the measured value for the fourth alternative time frequency resource block is higher than the sum of the first threshold and the first offset value, step S907 is executed, and the fourth alternative time frequency resource block does not belong to the target resource pool.

In embodiment 9, the first resource pool comprises the fourth time frequency resource block to which a fourth alternative time frequency resource block is associated; the measurement value for the fourth time-frequency resource block is above a first threshold; the first signaling and a first offset value are used together to determine whether the fourth alternative time-frequency resource block belongs to the target resource pool.

As an embodiment, the fourth time frequency resource block is one of the plurality of time frequency resource blocks comprised by the first resource pool, the fourth alternative time frequency resource block being associated to the fourth time frequency resource block.

As an embodiment, a fourth reference signal is transmitted on the fourth time frequency resource block.

As an embodiment, the fourth time-frequency resource block includes a time-frequency resource occupied by the fourth reference signal.

As an embodiment, a given time-frequency resource block in this application includes the fourth time-frequency resource block.

As an embodiment, a given alternative time frequency resource block in the present application includes the fourth alternative time frequency resource block.

As an example, a given reference signal in this application comprises the fourth reference signal.

As an embodiment, a given alternative time-frequency resource block in the present application is associated to a given time-frequency resource block in the present application; the given time frequency resource block comprises the fourth time frequency resource block, and the given alternative time frequency resource block comprises the fourth alternative time frequency resource block.

As an embodiment, the phrase "measuring a given reference signal on a given time-frequency resource block" includes measuring the fourth reference signal on the fourth time-frequency resource block.

As an embodiment, the measurement for a given time-frequency resource block includes the measurement for the fourth time-frequency resource block in the present application.

As one embodiment, the measuring for the fourth time frequency resource block includes measuring the fourth reference signal on the fourth time frequency resource block.

As an embodiment, the given reference signal comprises the fourth reference signal in this application.

As an embodiment, the measurement values for the fourth block of time frequency resources comprise RSRP of the fourth reference signal measured on the fourth block of time frequency resources.

As an embodiment, the measurement values for the fourth block of time frequency resources comprise RSSI of the fourth reference signal measured on the fourth block of time frequency resources.

As an embodiment, the measurement values for the fourth block of time frequency resources comprise RSRQ of the fourth reference signal measured over the fourth block of time frequency resources.

As an embodiment, the unit of the measurement value for the fourth time-frequency resource block is dBm.

As an embodiment, the unit of the measurement value for the fourth time-frequency resource block is.

As an embodiment, the unit of the measurement value for the fourth time-frequency resource block is mW.

As an embodiment, the unit of the measurement value for the fourth time-frequency resource block is W.

As an embodiment, the fourth signaling is sent on said fourth time-frequency resource block.

As an embodiment, the given signaling in this application includes the fourth signaling.

As an embodiment, the fourth signaling indicates the fourth time frequency resource block and the first priority.

As an embodiment, the first priority and the second priority are used to determine the first threshold.

As an example, the given threshold in this application comprises said first threshold.

As an embodiment, the measured value for the fourth time-frequency resource block is higher than the sum of the first threshold and a first offset value, and the fourth alternative time-frequency resource block does not belong to the target resource pool.

As an embodiment, the measured value for the fourth alternative time frequency resource block is lower than the sum of the first threshold and a first offset value, and the fourth alternative time frequency resource block belongs to the target resource pool.

As an embodiment, the measured value for the fourth time-frequency resource block is equal to the sum of the first threshold and a first offset value, and the fourth alternative time-frequency resource block belongs to the target resource pool.

As an embodiment, the first reference resource set of the first signaling indication includes the fourth alternative time frequency resource block, and a measurement value for the fourth time frequency resource block is lower than a sum of the first threshold and a first offset value, and the fourth alternative time frequency resource block belongs to the target resource pool.

As an embodiment, the first reference resource set of the first signaling indication includes the fourth alternative time frequency resource block, a measurement value for the fourth time frequency resource block is equal to a sum of the first threshold and a first offset value, and the fourth alternative time frequency resource block belongs to the target resource pool.

As an embodiment, for a measured value of the fourth time-frequency resource block being lower than the first threshold, the fourth alternative time-frequency resource block does not belong to the target resource pool.

As an embodiment, for a measured value of the fourth time frequency resource block being higher than the first threshold, the fourth alternative time frequency resource block does not belong to the first reference resource set, and the fourth alternative time frequency resource block does not belong to the target resource pool.

As an embodiment, for a measurement value of the fourth time frequency resource block being higher than the first threshold, the fourth alternative time frequency resource block belongs to the first reference resource set, and the fourth alternative time frequency resource block does not belong to the target resource pool.

As an embodiment, for a measurement value of the fourth time frequency resource block being higher than the first threshold, the fourth alternative time frequency resource block belongs to the first reference resource set, and the fourth alternative time frequency resource block belongs to the target resource pool.

As an embodiment, for a measurement value of the fourth time frequency resource block above the first threshold, the fourth alternative time frequency resource block belongs to the first reference resource set, and for a measurement value of the fourth time frequency resource block above a sum of the first threshold and a first offset value, the fourth alternative time frequency resource block does not belong to the target resource pool.

As an embodiment, the fourth alternative time frequency resource block belongs to the first reference resource set for measurements of the fourth time frequency resource block above the first threshold, and the fourth alternative time frequency resource block belongs to the target resource pool for measurements of the fourth time frequency resource block below a sum of the first threshold and a first offset value.

As an embodiment, the measurement value for the fourth time frequency resource block is higher than the first threshold, the fourth alternative time frequency resource block belongs to the first reference resource set, the measurement value for the fourth time frequency resource block is equal to the sum of the first threshold and a first offset value, and the fourth alternative time frequency resource block belongs to the target resource pool.

As an embodiment, the fourth alternative time-frequency resource block belonging to the first reference resource set means: the fourth alternative time frequency resource block is one time frequency resource block in the positive integer number of time frequency resource blocks included in the first reference resource set.

As an embodiment, that the fourth alternative time-frequency resource block does not belong to the first reference resource set means that: the fourth alternative time frequency resource block is different from any time frequency resource block in the positive integer number of time frequency resource blocks included in the first reference resource set.

As an embodiment, the fourth alternative time-frequency resource block belonging to the target resource pool means: the fourth alternative time frequency resource block is one of the plurality of time frequency resource blocks included in the target resource pool.

As an embodiment, that the fourth alternative time-frequency resource block does not belong to the target resource pool means: the fourth alternative time frequency resource block is different from any time frequency resource block in the plurality of time frequency resource blocks included in the target resource pool.

As one embodiment, the first offset value is a non-negative number.

As one embodiment, the first offset value is a positive integer.

As one embodiment, the unit of the first offset value is dBm.

As one embodiment, the unit of the first offset value is dB.

As an embodiment, the unit of the first offset value is mW.

As an embodiment, the unit of the first offset value is W.

As one embodiment, the first offset value is 2 dB.

As one embodiment, the first offset value is 3 dB.

As one embodiment, the first offset value is preconfigured.

As an embodiment, the first offset value is configured for higher layer signaling.

Example 10

Embodiment 10 is a block diagram illustrating a processing apparatus used in a first node, as shown in fig. 10. In embodiment 10, the first node apparatus processing device 1000 is mainly composed of a first receiver 1001 and a first transmitter 1002.

For one embodiment, the first receiver 1001 includes at least one of the antenna 452, the transmitter/receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 of fig. 4, for example.

For one embodiment, the first transmitter 1002 includes at least one of the antenna 452, the transmitter/receiver 454, the multi-antenna transmitter processor 457, the transmit processor 468, the controller/processor 459, the memory 460, and the data source 467 of fig. 4 of the present application.

In embodiment 10, the first receiver 1001 receives first signaling; the first receiver 1001 performs first channel sensing within a first resource pool; the first receiver 1001 determines a target resource pool; the first transmitter 1002 selecting a target time frequency resource block from a target resource pool; the first transmitter 1002 sends a second signaling on a target time-frequency resource block; the first signaling indicates a first set of reference resources comprising at least one time-frequency resource block; the first channel awareness is used to determine the target resource pool; the first alternative time frequency resource block is one time frequency resource block in the target resource pool; whether the first alternative time frequency resource block belongs to the first reference resource set is used to determine whether the first alternative time frequency resource block is selected as the target time frequency resource block; the second signaling is used to indicate the target time-frequency resource block.

As an embodiment, the first alternative time-frequency resource block is associated to a first time-frequency resource block; the first resource pool comprises the first time-frequency resource block; the measurement value for the first time frequency resource block and whether the first candidate time frequency resource block belongs to the first reference resource set are used together to determine whether the first candidate time frequency resource block is selected as the target time frequency resource block.

For one embodiment, the first receiver 1001 receives a third signaling; the third signaling indicates a second resource pool, the second resource pool including a third time-frequency resource block, a third alternative time-frequency resource block being associated to the third time-frequency resource block; the second resource pool is used to determine the first resource pool, the first resource pool not including the third time-frequency resource block; the first signaling is used to determine whether the third alternative time-frequency resource block belongs to the target resource pool.

As an embodiment, the first resource pool comprises the fourth time frequency resource block to which a fourth alternative time frequency resource block is associated; the measurement value for the fourth time-frequency resource block is above a first threshold; the first signaling and first offset value are used together to determine whether the fourth alternative time-frequency resource block belongs to the target resource pool.

For one embodiment, the first node apparatus 1000 is a user equipment.

As an embodiment, the first node apparatus 1000 is a relay node.

For one embodiment, the first node apparatus 1000 is a base station apparatus.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The first node device in the application includes but is not limited to wireless communication devices such as cell-phones, tablet computers, notebooks, network access cards, low power consumption devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircrafts, airplanes, unmanned aerial vehicles, and remote control airplanes. The second node device in the application includes but is not limited to wireless communication devices such as cell-phones, tablet computers, notebooks, network access cards, low power consumption devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircrafts, airplanes, unmanned aerial vehicles, and remote control airplanes. User equipment or UE or terminal in this application include but not limited to cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, aircraft, unmanned aerial vehicle, wireless communication equipment such as remote control aircraft. The base station device, the base station or the network side device in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission and reception node TRP, a GNSS, a relay satellite, a satellite base station, an air base station, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node configured for wireless communication, comprising:

2. The first node of claim 1, wherein the first alternative time-frequency resource block is associated to a first time-frequency resource block; the first resource pool comprises the first time-frequency resource block; the measurement value for the first time frequency resource block and whether the first candidate time frequency resource block belongs to the first reference resource set are used together to determine whether the first candidate time frequency resource block is selected as the target time frequency resource block.

3. The first node according to claim 1 or 2, comprising:

the first receiver receives a third signaling;

4. The first node according to claim 1 or 2, characterized in that the first resource pool comprises a fourth time frequency resource block to which a fourth alternative time frequency resource block is associated; the measurement value for the fourth time-frequency resource block is above a first threshold; the first signaling and first offset value are used together to determine whether the fourth alternative time-frequency resource block belongs to the target resource pool.

5. A method in a first node used for wireless communication, comprising:

6. The method according to claim 5, characterized in that said first alternative time-frequency resource block is associated to a first time-frequency resource block; the first resource pool comprises the first time-frequency resource block; the measurement value for the first time frequency resource block and whether the first candidate time frequency resource block belongs to the first reference resource set are used together to determine whether the first candidate time frequency resource block is selected as the target time frequency resource block.

7. The method of claim 5 or 6, comprising:

receiving a third signaling;

8. The method according to claim 5 or 6, characterized in that said first resource pool comprises a fourth block of time-frequency resources, to which a fourth alternative block of time-frequency resources is associated; the measurement value for the fourth time-frequency resource block is above a first threshold; the first signaling and a first offset value are used together to determine whether the fourth alternative time-frequency resource block belongs to the target resource pool.